ASTROSAT CZTI

Data Quality Report

Orbit 20191120_A07_007T03_9000003320_level2

Creation date: 2025-12-06T00:03:39.408130
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A07_007T03_9000003320cztM0_level2.fits modeM0/AS1A07_007T03_9000003320cztM0_level2_quad_clean.evt
Size (bytes)266,071,680132,552,000
Size253.7 MB 126.4 MB
Events in quadrant A1,659,576584,565
Events in quadrant B1,597,304576,639
Events in quadrant C1,617,324553,105
Events in quadrant D1,391,946505,328

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A05300
B05300
C05300
D05300

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0600
B0600
C0600
D0600

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0544160
B0555070
C0551630
D0654490

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A260622070.794260%
B260622230.855652%
C260624111.577009%
D260629023.460978%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 32037 26060 0 0 0.00% 0.00%
B 32037 26061 0 0 0.00% 0.00%
C 32037 26058 0 0 0.00% 0.00%
D 32037 26052 0 0 0.00% 0.00%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 0 29 1625 11.48 431 409 105.9
A 7 110 1353 8.91 431 409 105.9
A 0 30 1259 8.03 431 409 105.9
B 2 9 1262 10.24 422 405 83.7
B 5 128 1084 8.11 422 405 83.7
B 2 8 1052 7.73 422 405 83.7
C 12 241 1111 6.49 427 403 109.1
C 9 209 1104 6.42 427 403 109.1
C 3 234 1074 6.15 427 403 109.1
D 15 46 1033 6.23 397 362 107.7
D 6 231 1019 6.1 397 362 107.7
D 10 189 1012 6.04 397 362 107.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter